Synthesis and biological evaluation of new 2-amino-6-(trifluoromethoxy)benzoxazole derivatives, analogues of riluzole
摘要:
This manuscript describes the synthesis of a new series of 2-amino-6-(trifluoromethoxy)benzoxazole derivatives (1-5) and a benzothiazine derivative (6) structurally related to riluzole, the only neuroprotective drug currently approved for the treatment of the amyotrophic lateral sclerosis. Preliminary results indicate that the synthesized compounds, in particular benzamide derivatives 3 and 4, are able to antagonize voltage-dependent Na+ channel currents, and therefore they could be exploited as new inhibitors of these channels. Moreover, all compounds possess low binding affinity for GABA and NMDA receptors.
Synthesis of benzothiazoles from 2-aminobenzenethiols in the presence of a reusable polythiazolium precatalyst under atmospheric pressure of carbon dioxide
作者:Supill Chun、Sabyuk Yang、Young Keun Chung
DOI:10.1016/j.tet.2017.05.003
日期:2017.6
Synthesis of benzothiazoles from 2-aminobenzenethiols and carbondioxide was carried out using poly(3,4-dimethyl-5-vinylthiazolium) iodide as a precatalyst to in situ generation of NHCs by deprotonation. The reaction was successfully carried out under mild conditions (1 atm of CO2 and 60–70 °C) with a broad substrate scope and functional group tolerance. The precatalyst salt was recovered and reused
A metal-free radical cascade cyclization of 2-isocyanoaryl thioethers with alcohols has been developed. It provides a novel and effective method to synthesize diverse 2-hydroxyalkyl benzothiazoles with broad substrate scope, good functional group tolerance and moderate to excellent yields.
Electrochemical Synthesis of Phenothiazinone as Fluorophore and Its Application in Bioimaging
作者:Qian Wang、Yue‐Xi Chen、Su‐Hui Ji、Jian‐Min Zhou、Ren‐Hao Li、Yun‐Rui Cai
DOI:10.1002/chem.202302124
日期:2023.11.21
Electrochemical synthesis of phenothiazinone via oxidative cyclocondensation of quinone and 2-aminothiophenol under mild condition is presented, along with its bio-application as fluorophore for lipid droplets imaging in living cells.